Property and Equipment

6 Months Ended

Jun. 30, 2020

Property Plant And Equipment [Abstract]

Property and Equipment

4. Property and Equipment

Property and equipment consists of the following (in thousands):

	Estimated Useful
	Life (Years)		June 30, 2020			December 31, 2019
Land		—	$	875		$	875
Buildings	39-40			17,389			17,389
Building improvements	5-40			37,543			37,543
Machinery and equipment	3-15			55,055			54,982
Furniture, fixtures and office equipment	5-10			3,005			3,005
Computer equipment and software		3		8,319			8,234
Construction in progress		—		169			114
				122,355			122,142
Less accumulated depreciation				(96,168	)		(95,364	)
Total property and equipment, net			$	26,187		$	26,778

Depreciation expense related to property and equipment for the three and six months ended June 30, 2020 and 2019 was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Depreciation Expense	$	448	$	371	$	891	$	739